In 1960, Norris relocated to New York City and formed a trio with guitarist Billy Bean and bassist Hal Gaylor, and the group made one album. Norris took a job at the New York City Playboy Club in 1963 and in time became the club's Director of Entertainment, remaining there until 1970. Between 1970 and 1974, Norris was a free-lance performer and taught in the New York area. In 1974, he replaced Roland Hanna in the Thad Jones-Mel Lewis Band. After a tour of Scandinavia, he remained in Europe to record a duo album with double bass player George Mraz, titled Drifting.

Returning to the states, Norris joined the Charles Mingus Quintet in 1976. In the dressing room prior to a performance, according to Norris, he made the mistake of calling the temperamental Mingus "Charlie" instead of "Charles," which angered Mingus. At that moment, the stage manager entered the room and told the musicians they were needed onstage immediately, which provided a temporary escape from confrontation. Norris quit the band and accepted a job in Berlin, Germany, as pianist with the Sender Freies Berlin-Orchestra. He moved to Berlin in January 1977 and lived there from that point. He insisted that his fear of Mingus was the primary cause of the move to Europe.

In 1990, Norris signed a five-album contract with Concord Records. The resulting recordings were all significant, but especially Sunburst (with saxophonist Joe Henderson), Hues of Blues (with George Mraz), and the Live at Maybeck Recital Hall solo piano album. In 1998, without a record contract, Norris self-financed the album From Another Star, made in New York with bassist Mike Richmond, pressing 1,000 copies.

A documentary film directed by Chuck Dodson, Walter Norris, a documentary, was completed in 2010.[2] In 2005 an autobiography, "In Search of Musical Perfection" and method book "Essentials for Pianist Improvisers" were released. In July 2006, Norris recorded at his home in Berlin with Los Angeles bassist Putter Smith.

He died on October 29, 2011 at his home in Berlin, Germany, and is survived by his wife, Kirsten. His other descendants were two daughters from his previous marriage to Mandy, Dinah and Delia (deceased), and two granddaughters, Emily and Holly.